Slub catcher



R. WEBBER July 14, 1931.

SLUB CATCHER filed June 28,3926 2 Sheets-Sheet, 1

INVENTOR O k i ATTORNEY l a't ented July 14, 1931 UNITED STATES RALPH WEBBER, F CLOVER, SOUTH (.lAItOLINA SLUB CATCHER Application. filed June 28,

This invention relates to improvements in slub catchers and has for an ob ect the pro- VlSlOIlOf means .for preventmg the passage of .slubs, gouts, extra plies and all yarn imperu fections, either in single or ply yarn.

To this end, the invention provides a detector mechanism which may be adjusted to the particular character of the yarn and which will be actuated by the passage of yarn imperfections to operate a cutter, the

character of the connection between the detector mechanism and cutter, multiplying the action of the former, so that a slight operation of the detector mechanism will 16 provide a relatively great movement of the cutter.

With the above and other objecls in view, the invention further includes the following novel features and details of construction,

to be hereinafter more fully described, il-

lustratedin the accompanying drawings and pointed out in the appended claims.

In the drawings Figure l'is a plane View of a slub catcher 1 constructed in accordance with the invention.

Figure 2 is an elevation of the same. Figure 3 is an end view. Figure 1 is an enlarged section taken substantially on the line H of Figure 2.

Figure 5 is a fragmentary section taken substantially on the line 5-5 of Figure 2.

Figure 6 is a section on the line 66 of Figure 2.

Referring to the drawings in detail where in like characters of reference denote correponding parts, the reference character 10 indicates the base or tension plate over which the yarn A travels. The yarn passes between yarn guides 11 and 12 located at opposite ends of the plate 10 and beneath and above guides 13 and 14; respectively, arranged at opposite sides of the guides 11. The yarn also passes through a tension device which includes a rotatable disk 15, mounted upon a pin 16, so that a proper shaped package may be maintained.

Located at one end of the plate 10 is a detector mechanism which includes a feeler plate 17 the latter being mounted for horizontal pivotal adjustment upon a rivet 18 1926. Serial No. 119,264.

which passes through one end of a lever 19 of the first class. This lever is fulcrumed upon a pin 20, carried by a bracket arm 21 which rises from the plate 10.

lriounted for vertical pivotal movement upon the plate 10 as shown at 22 is a substantially L-shaped member 23 engaging the end of the arm 19 on which the feeler plate 17 is mounted. Mounted in an upstanding bracket 23 on the plate 10 is a disk 24 which is carried by a threaded shank 25. This shank is adjustable in the bracket 23 and is held in adjusted position by means of a lock nut 26. The disk 2 1 is disposed opposite the feeler plate 17 and is adjustable relative to the feeler plate so as to provide for the passage of the yarn A therebetween, the adjustment being regulated in accordance with the character of the yarn. Accurate adjustment may be thus obtained so that when a slub, or any other yarn imperfection passes between the plate and disk, the plate 17 will be moved relatively outward so as to move the lever 19 about its fulcrum. Such movement of the plate '17 and the lever 19 is resisted by a spring 27 re-acting between the pivoted L- shaped member'23 and the plate 10. The bracket 23 also carries the guide finger 28 for directing the yarn into the space between the feeler plate 17 and the disk 24.

Just prior to its passage between the guides 12, the yarn A passes along a guide 29 and pivoted upon the plate 10 opposite this guide as shown at 30 is a knife or cutter 31. The cutting edge of this knife is so arranged that when the said knife is moved in one direction upon its pivot 30, it will sever the yarn. For this purpose the knife or cutter 31 has rigidly extending therefrom an arm 32 whose outer end carries a rod 33 which operates within .90 the bifurcated end 3 1 of the pivoted lever 19. Thus, when the feeler plate is moved to aetuate the lever 19, the cutter or knife 31 will be operated to sever the yarn and as movement of the feeler plate is controlled by the passage of yarn imperfections, it will be apparent that when any imperfection of the yarn passes between the fe-eler plate 17 and the disk 14, the yarn will be severed by the cutter 31. Due to the relative length of the arm between the fulcrum 20 and the plate 17 and the arm between the fulcrum 20 and the bifurcated end 34, the movement of the last mentioned end of the lever will be several times as great as the movement of the other end of the lever, so that sufficient movement will be imparted to the cutter 31 to efiectually sever the yarn.

An apertured lug 35 and a set screw 36 are provided for mounting the plate 10.

The invention is susceptible of various changes in its form, proportions and minor details of construction and the right is herein reserved to make such changes as properly fall within the scope of the appended claims.

Having described the invention what is claimed is l; A slub catcher, comprising a knife adj acent to the yarn, a detector having a fixed element across which the yarn is drawn, an outwardly movable element opposite the fixed element at the other side of the yarn and restrained against movement in the direction of travel of the yarn, a positive connection between the movable element and the knife which brings the cutting edge of the knife against the yarn when the movable element is moved away from the fixed element by the entry between them of the imperfection in the yarn, and a spring serving at the same time to urge the movable element of the detector towards the yarn and to urge the knife away from the yarn.

2. A slub catcher, comprising two spaced fixed flat plates at the same side of the yarn, a lever at the opposite side of the yarn extending from a point opposite one of said fixed plates and to a point opposite the other and fulcrumed at an intermediate point, a movable feeler plate opposite one of said fixed plates and secured to one end of said lever, a movable knife opposite the other of said fixed plates and connected to the other'end of said lever.

3. A slub catcher, comprising means for guiding the yarn in a straight line, a straight lever at one. side of the line of travel of the yarn fulcrumed at a point at a distance from its middle point so that a slight movement of one of its ends away from the line of travel of the yarn causes a several times greater movement of its other end towards the line of travel of the yarn, a feeler connected to the first mentioned end of said lever,

" a yarndoreaker connected to the other end thereof, and a spring tending to turn the lever about its pivot so as to move its short end towards the yarn and its long end away from the yarn.

4. A slub catcher, comprising means for guiding a yarn in a straight line, a straight lever of the first class substantially parallel to the line of travel of the yarn, a fixed fulcrum for said lever, means tending to turn said lever about its fulcrum, a stop limiting said turning movement, a yarn-breaker connected to one end of said lever, a detector comprising opposed flat plates, one of which is secured to the other end of the lever, means for adjusting the distance between said plates when the turning movement of the lever is arrested by said stop, and means for adjusting the angle between the plate which is secured to the lever and the lever so that this plate may be kept parallel to the other plate in difierent adjustments of the distance between them.

5. A slub catcher, comprising a sharpedged knife adjacent to the yarn and inclined towards the direction from which the yarn is traveling, separable elements having opposed fiat surfaces between which the yarn passes and restrained against movement in the direction of travel of the yarn, and means actuated by a separation of said elements to move the cutting edge of said knifelagainst the yarn.

6. A slub catcher, comprising a straight lever of the first class having a long arm and a short arm, a feeler adjacent to the yarn secured to the short arm of the lever, and a bell crank lever having a short arm in engagement with the end of the long arm of the straight lever and a long arm terminating in a cutting edge adjacent to the yarn.

7. A slub catcher, comprising a normally inactive yarn-breaker adjacent to the yarn, a detector having separable elements providing opposed surfaces between which the yarn passes and restrained against motion in the a direction of travel of the yarn, and motionincreasing mechanism connecting the detector with the breaker. r

In testimony whereof I affix my si nature.

RALPH wneiann.

its 

